题目内容
脱式计算.
(1)95.4÷18-5.4×
(2)455+45÷0.5-24×5.5
(3)
÷〔(
-
)×
〕
(1)95.4÷18-5.4×
| 1 |
| 18 |
(2)455+45÷0.5-24×5.5
(3)
| 1 |
| 9 |
| 2 |
| 3 |
| 1 |
| 5 |
| 5 |
| 7 |
(1)95.4÷18-5.4×
,
=95.4×
-5.4×
,
=(95.4-5.4)×
,
=90×
,
=5;
(2)455+45÷0.5-24×5.5,
=455+90-132,
=545-132,
=413;
(3)
÷[(
-
)×
],
=
÷[
×
],
=
÷
,
=
.
| 1 |
| 18 |
=95.4×
| 1 |
| 18 |
| 1 |
| 18 |
=(95.4-5.4)×
| 1 |
| 18 |
=90×
| 1 |
| 18 |
=5;
(2)455+45÷0.5-24×5.5,
=455+90-132,
=545-132,
=413;
(3)
| 1 |
| 9 |
| 2 |
| 3 |
| 1 |
| 5 |
| 5 |
| 7 |
=
| 1 |
| 9 |
| 7 |
| 15 |
| 5 |
| 7 |
=
| 1 |
| 9 |
| 1 |
| 3 |
=
| 1 |
| 3 |
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